Socket member for snap-fasteners



I J. E. FORSLUND. SOCKET MEMBER FOR SNAP FASTENERS.

APPLICATION FILED OCT-20, l 919.

1 60,914. Patented Nov. 30, 1920.

'7 citizen'of the so cKEr MEMBER FOR sNAP-rAsrENEas.

Specification of Letters Patent. Patented N 30 192() Application filed October 20, 1919. Serial mfasaoss.

To'aZZ whom" it may concern:

'B'e'it known that I, JOHN E. FonsLUNm'a United States, and resident of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Socket embers for Snap-Fasteners, of which the following is a specification.

This invention relates to socket members for snap fasteners such as used for gloves and other articles; and the object of this in vention is to so interlock the non-metallic cap or shell with the spreader member that it is impossible for one to rotate relative to the other and to also prevent the cap from becoming loosened when once positioned.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1-is a central sectional elevation showing my improved socket member as secured to a strip of material.

Fig. 2is a perspective View showing a detail of the cap member.

Fig. 3is a perspective view showing a detail of the washer.

Fig. 4.is a sectional elevation showing a detail of the spreader member.

Fig. 5is a sectional elevation showing a detail of the collet.

Fig. 6is a front view of the collet.

- Fig. 7shows the spreader as applied to the collet.

Fig. 8is a sectional plan view on the line 88 of Fig. 1, showing the interlocking ribs or projections engaging the spaces or notches in the edge of the spreader.

Fig. 9is a sectional elevation on line 99 of Fig. 8, showing the thickened portion, projection or rib.

Fig. 10is a section on line l010 of Fig.

8 sectioned through one of the ribs or thickened portions formed on the inner edge of the cap.

Referring to the drawings, 11 designates the collet-member of the socket, which is formed somewhat in cup-shape with its center portion pierced or cut out and the edge 12 about the same is turned inwardly. t 13 is the spreader-member whose center portion 14 is also cut out and its center walls turned outwardly into somewhat of a frustoconical sha e, its ed e bein s aced sli htl from the in turned edge 12 f f he collet? y The outer edge portion 15 of this washer 1s notche d or corrugated forming fingers'l'?" with recesses 16 between them, which fingers are also themselves notched at 10. This notched edge of the spreader member is then bent over onto the outer face of the collet securely connectin the two together, as illustrated in Fig.

he cap-member 18 is formed of celluloid or other suitable non-metallic material and when applied to the other parts a stiffening washer 19 is positioned in the bottom thereof and then the edges 20 of the cap are heated so as to soften the stock, at which time sufficient pressure is applied to the sides and edges of this cap to force the stock into the recesses 16 about the spreader forming ribs or inwardly-pro ecting portions 21 which by engaging the edges of the fingers 17 perform two functions first, these ribs or projections serve as keys to effectually prevent relative rotation of the parts; and second, they serve to stiffen the edge of the cap so that it is positively held in position and prevented from spreading or being loosened from the spreader.

By turning the edges of the spreader over the collet it will be seen that the collet serves as a backing to firmly support the fingers 17 of the spreader against being bent inwardly by the pressure of the dies used to force the plastic edge of the cap into the recesses 16 of the spreader and if it were not for this support these fingers would be forced inwardly by this pressure and the locking function destroyed.

It is found in practice that when the nonmetallic cap is positioned over the other parts of a socket particularly where the outer surface engaged by it, is smooth, that no matter how much pressure is applied to force the sides of the cap onto the spreader, the cap will open up and soon become loosened and will rattle about and rotate which is considered most objectionable. The notched edges of my spreader obviate this serious difliculty as when the sides of the cap are softened by the application of heat thereto and are in semi-plastic condition, the stock is forced into the notches in the spreader, there by positively locking the two parts together against any possibility of relative movement even when subjected to the heat of the body.

My improved construction of socket member is practical and inexpensive and is very efficient and practical in operation.

Ihe foregoing description is directed solely toward the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changesto which the device is susceptible, the invention being defined and limited only by the terms of the appended claims.

I claim:

l. 'A socket member for snap fasteners comprising a collet, a spreader member having a frusto-conical center portion extending into said 'collet, the outer edge of said spreader being notched-and bent over'onto the outside of the collet, and a non-metallic cap inclosing said spreader andhaving ribs on its edge interlocking with the notches in said spreader. V

V 2. A socket member for snap fasteners comprising a 'colletfa spreader member having its center pierced and extending into said collet,' the outer edge ofsaid spreader being notched and turned over. the outer face of said collet, and a non-metallic cap inclosing said spreader and being provided With inward projections molded inposition to interlock with the notches in said spreader to prevent relative rotation and spreading of the cup edges. 7

- In testimony whereof I affix my signature.

JOHN E. FORSLUND. 

